Tobacco pipe



Feb. 17, 1959 G. J.'F. HARD AF SEGERSTAD 2, 73,

TOBACCO PIPE,

Filed Sept. 24. 1956 10 1,3 12 5 2 Fm 1T //fl// //I III-UV United StatesPat t 7 TOBACCO PIPE Goran Jacob Fredrik Hard at Segerstad, Bromma,Sweden Application September 24, 1956, Serial No. 611,546

Claims priority, application Sweden September 29, 1955 2 Claims. (-Cl.131-194) The present invention relates to a tobacco pipe comprising asubstantially conventional combustion chamber attached at the top of andcommunicating through a short channel with a condensation cleaner.

The condensation cleaner is based upon the principle of the cold wall,that is, thanks to the construction of the pipe the smoke is forced topass along comparatively large surfaces of a material of good heatconductivity, for example light metal. Water and various tar productswill then be condensed on said surfaces.

The main object of the present invention is to provide a tobacco pipewith a cleaner for the smoke that is extremely simple and easilyaccessible but yet effective, and with means for preventing pipe tarsand the like from entering the stem of the pipe.

Another object of the invention is to provide a tobacco pipe that caneasily be taken apart, cleaned and put together again.

These and other objects are attained substantially through the newcondensation cleaner which, according to the invention, consists of aninner perforated tube and an outer cylindric bowl, against the bottom ofwhich the inner tube rests, that end of the inner tube located remotefrom the bottom of the bowl communicating with the combustion chamberand the perforations of said inner tube debouching into the bowl, sothat the smoke is forced to pass the channel-shaped space between theinner tube and the outer bowl, where it is cooled and cleaned.

An embodiment of the invention is shown diagrammatically in theaccompanying drawing which illustrates a longitudinal section through apipe constructed in accordance with the invention.

Referring to the drawing the pipe head consists of an upper combustionportion 1 and a lower condensation cleaning unit 2.

The combustion portion 1 consists of a head portion 3 which ispreferably made of a suitable wooden material, for example briar andprovided with an upper bowlshaped hollow 4 for the tobacco and a lowercylindrical hollow 5 which is wider than the lower part of the hollow 4,and a preferably ceramic plate 6 which forms the bottom of the upperhollow 4 in which the tobacco burns, and lies tightly against the bottomof the lower hollow 5 and is provided with small perforations 7. Thehollows 4 and 5 form together a through channel through the combustionportion 1, so that the smoke from the combustion chamber 4 can enter thecondensation cleaner 2 through the perforations 7.

The condensation cleaner 2 consists of an inner tube 8, for example oflight metal, the outer diameter of which being equal to the diameter ofthe lower hollow 5, and

2,873,?48 Patented Feb. 17, 1959 "ice edge just rests against theperforated plate 6 and the lower edge of the tube 8 rests against thebottom of the bowl 9 when the bowl is screwed tightly to the headportion 3. Thus, between tube 8 and bowl 9 there is formed a cylindricalspace 14 which communicates through small holes 15 with the interior ofthe tube 8 and through the perforations 7 in the plate 8 also with thecombustion chamber 4. At least some of the holes are locateddiametrically opposite the stem 13, the inner end of which extendssomewhat into the annular space 14, so that the inner mouth of thechannel 16 of the stem 13 will be surrounded by a wall 17 which preventspipe oil and the like from entering the suction channel 16, if a greaterquantity thereof has gathered in the bowl 9.

The smoke passes through the perforations 7 in the plate 6 under thetobacco into the inner tube 8 and from the latter through the holes 15into the annular space 14 between the inner tube 8 and the bowl 9. Thesmoke now passes out through the holes 15 towards the outer wall of thebowl 9, which wall is provided with cooling flanges 11, and must make asemi-circular or fourthcircular course before reaching the inner mouthof the channel 16.

When the pipe is to be cleaned and dried only the head portion 3 and, ifdesired, the stem 13 are screwed off from the bowl 9, after which boththe inner tube 8 and the bottom plate 6 can be taken out.

The embodiment described and illustrated in the drawing is of courseonly to be considered an example, and the details can be modified inseveral ways Within the scope of the claims. Thus, the bottom plate canbe a part of the main portion 3 instead of being a separate member.

WhatIclaim is:

1. A tobacco pipe comprising a combustion bowl made of a non-metallicmaterial having poor heat-conducting properties, said combustion bowlhaving a vertical bore passing therethrough, a perforated platetransversely mounted in the lower portion of said bore, a tubularmetallic inner sleeve colinearly positioned below said combustion bowl,the upper portion of said sleeve extending within said bore with theupper extremity of said sleeve in contiguous engagement with said plate,a cylindrical tubular condensation member made of a metal having goodheat-conducting properties concentrically arranged about and spaced fromsaid tubular sleeve, said condensation'member having a closed bottomwall in contiguous engagement with the lower annular extremity of saidinner tubular sleeve, the lower portion of the outer periphery of saidcombustion bowl having screw threads in engagement with screw threads onthe upper portion of the inner periphery of said condensation member,said inner sleeve having a plurality of peripheral apertures therein,and a pipe stem mounted at one end in a peripheral opening in saidcondensation member whereby tobacco smoke is withdrawn by suctionthrough the opening in the bottom of the bowl axially into the innertubular sleeve, through the perforations of said 3 1 inner sleeve intothe annular space intermediate said tubular sleeve and said condensationmember," and through the bore of the pipe stem.

2. A tobacco pipe as defined in claim 2 wherein the portion of theperipheral wall of said inner sleeve directly opposite said pipe stem isimperforate.

References Cited in'the file of this patent UNITED STATES PATENTS 10819,513 Buschow May 1, 1906 4 Noble Jan. 3, 1911 Maneusi May 5, 1931Sprich July 7, 1931 Palmer Nov. 13, 1934 Blum Feb. 20, 1940 Eguehi -,May27, 1941 Andis Sept. 14, 1943 UNITED STATES PATENT OFFICE CERTIFICATE OFCORRECTION Patent Noo 2,873,748 February 17y 1959 Goran Jacob Fr'edrik"iiard af Segersiad It is hereby certified that error appears in theprinted specification of the above numbered patent requiring correctionand that the said Letters Patent should read as corrected below.

Column 3, line A, for the olaim reference numeral "2." read m l ,v 1

Signed and sealed this 2nd day of 19590 SEAL) Attest:

KARL Ho AXLINE.

Attesting Officer ROBERT C. WATSON Commissioner of Patents

